(2)
"Altering" means to change or modify a building or building design, or to
revise, rather than repair, a mitigation system or mitigation system
design.

(3)
"As Low As Reasonably Achievable (ALARA)" means every
reasonable effort to maintain exposures to radiation as far below the dose
limits as is practical consistent with the purpose for which the licensed
activity is undertaken.

(4)
"Backdrafting" means a condition where the normal
movement of combustion products up a flue, resulting from the buoyant forces on
the hot gases, is reversed, so that the combustion products can enter the
house. Backdrafting of combustion appliances (such as fireplaces and furnaces)
can occur when depressurization in the house overwhelms the buoyant force on
the hot gases. Backdrafting can also be caused by high air pressures or
blockage at the chimney or flue termination.

(5)
"Backer rod"
means a semirigid foam material resembling a rope of various diameters used to
fill around pipes, large cracks and gaps, etc. and to assist in making a sealed
penetration. For example, where a pipe is inserted through a concrete slab, a
length of backer rod is jammed into the opening around the pipe. Caulking is
then applied to the space above the backer rod and between the outside of the
pipe and the slab opening. The purpose of the backer rod is to hold the
semifluid caulk in place until it sets or hardens. It is most important that a
sealant only adhere to the two sides of the joint and not the base of the joint
(third side). This allows for a long-lasting, flexible, air-tight seal.
Adhesion to all three sides prevents the sealant from elongating properly and
causes sealant failure.

(6)
"Block wall depressurization (BWD)" means a radon
mitigation technique that depressurizes the void network within a block wall
foundation by drawing air from inside the wall and venting it to the
outside.

(7)
"Building" means a publicly or privately owned
structure consisting of any combination of foundations, walls, columns,
girders, beams, floors, or roofs, with or without other elements or
appurtenances.

(9)
"Check source" means a radioactive source, not
necessarily calibrated, that is used to confirm the continuing satisfactory
operation of an instrument.

(10)
"Clearly and
conspicuously" means that the print used to state the information required in a
radon mitigation contract either is equal in size to the print in the remainder
of the contract and is boldfaced or is larger than the print in the remainder
of the contract.

(11)
"Client" means any person who contracts for
measurement or mitigation services.

(12)
"Combination
foundations" means buildings constructed with more than one foundation type;
e.g., basement/crawlspace or basement/slab-on-grade.

(13)
"Commercial
building" means a type of building that is designed for commercial use,
including but not limited to office buildings, warehouses, retail facilities,
schools, recreational facilities, assisted living facilities and buildings that
combine these uses.

(14)
"Communication test" means a diagnostic test designed
to qualitatively measure the ability of a suction field and air flow to extend
through the material beneath a concrete slab floor and thus evaluate the
potential effectiveness of a subslab depressurization system. This qualitative
test is commonly conducted by applying suction on a centrally located hole
drilled through the concrete slab and simultaneously observing the movement of
smoke downward into small holes drilled in the slab at locations separated from
the central suction hole.

(15)
"Continuing
education (CE) credits" means those credits received for documented successful
completion of, or for instructing, a radon course approved by the
director.

(16)
"Crawlspace depressurization" means a radon control
technique designed to achieve lower air pressure in the crawlspace relative to
indoor air pressure by use of a fan powered vent drawing air from within the
crawlspace.

(17)
"Diagnostic tests" means procedures used to identify
or characterize conditions within buildings that may contribute to radon entry
or elevated radon levels or may provide information regarding the performance
of a mitigation system.

(18)
"Director" means the director of health or his
authorized representative.

(19)
"Drain tile
depressurization (DTD)" means a type of active soil depressurization system
where the suction point piping attaches to a drain tile or is located in the
gas-permeable material near the drain tile. The drain tile may be inside or
outside the footings of the building.

(20)
"Drain tile
loop" means a continuous length of drain tile or perforated pipe extending
around all or part of the internal or external perimeter of a basement or
crawlspace footing.

(21)
"Dwelling" means a single-family home or a single unit
within a multifamily complex.

(22)
"Eave" means
the border of a roof that overhangs any wall.

(23)
"Electret"
means a plastic disk, typically of teflon, that holds an electric charge on its
surface and serves as the detector in an electret ion chamber radon test
device.

(24)
"Electret ion chamber" means a radon test device
consisting of an electrically conducting enclosure of a known air volume, with
an electret as part of the interior surface, inside which radiation emitted
from the decay of radon and radon progeny cause ionization of the air.

(25)
"Footprint" means each foundation type in direct contact with soil or other
material.

(26)
"Foundation type" means basement, crawlspace,
slab-on-grade or any other construction technique approved by local building
code.

(27)
"Government entity" means the state, a state agency as
defined in section
1.60 of the
Revised Code, a political subdivision, or any entity of local government.

(28)
"Home environment measurement" means a short-term or long-term measurement of
radon in a single-family home, duplex or condominium.

(29)
"Individual"
means any human being.

(30)
"Interfere" means to adversely or potentially
adversely impact the successful completion of an indoor radon measurement by
changing the radon or radon progeny concentrations or altering the performance
of measurement equipment or an indoor radon mitigation system installation or
operation.

(31)
"Laboratory analysis" means the act of analyzing by a
laboratory approved by the director, a radon measurement device to determine
the radon concentration to which it was exposed during a radon test.

(32)
"Licensee" means a person, business entity or government entity to whom a
license is issued.

(33)
"Living area" means any area in a building that is, or
could be, adapted for human habitation whether the area is located in a
basement, over a crawlspace, or situated on a slab-on-grade.

(35)
"Lower limit of detection (LLD)" means the smallest amount of sample activity
which will yield a net count for which there is confidence at a predetermined
level that activity is present.

(36)
"Mechanically
ventilated crawlspace system" means a radon control technique designed to
increase ventilation within a crawlspace, achieve higher air pressure in the
crawlspace relative to air pressure in the soil beneath the crawlspace, or
achieve lower air pressure in the crawlspace relative to air pressure in the
living spaces, by use of a fan.

(37)
"Multifamily
building" means a building, three stories or less, designed to house four or
more families in separate units that do not have a common heating ventilation
and air conditioning (HVAC) system for multiple units.

(38)
"Passive
monitor" means a measurement device that does not require external power or
batteries to operate, such as charcoal detectors or alpha-track
detectors.

(39)
"Perimeter channel drain" means a system for
collecting water in a basement by means of a large gap or channel between the
concrete floor and the wall. Collected water may flow to aggregate beneath the
slot (french drain) or to a sump where it can be drained or pumped away.

(40)
"Person" means any individual, business entity, or government entity.

(42)
"Pressure field
extension" means the distance that a pressure change is induced in the subslab
area, measured from a single or multiple suction points.

(43)
"Radon" means
both the radioactive, gaseous element produced by the disintegration of radium
and the short-lived radionuclides that are decay products of radon.

(44)
"Radon chamber" means a facility in which radon measurement devices or
detectors are exposed to known radon concentrations.

(45)
"Radon device
manufacturer" or "device manufacturer" or "manufacturer" means a person,
business entity or government entity which develops or manufactures radon
measurement devices.

(46)
"Radon laboratory" means a business entity or
government entity that analyzes air, soil, water, or passive radon detection
devices to determine the presence and concentration of radon in them.

(47)
"Radon mitigation" means the application or installation of methods or
materials to reduce airborne radon concentrations or to prevent the entry of
radon into the indoor atmosphere.

(48)
"Radon
mitigation contractor" means a business or government entity which performs or
authorizes employees to perform radon mitigation.

(49)
"Radon
mitigation specialist" means an individual who performs radon testing; provides
professional or expert advice on radon testing, radon exposure, health risks
related to radon exposure, radon mitigation, or radon entry routes; provides
on-site supervision of radon mitigation; or holds himself or herself out as
doing any of the foregoing.

(50)
"Radon
mitigation system" or "mitigation system" or "radon reduction system" means any
system or steps designed in whole or in part to reduce radon concentrations in
the indoor air of a building.

(51)
"Radon progeny"
means any combination of the short-lived decay products of radon.

(52)
"Radon resistant new construction (RRNC)" means the established United States
environmental protection agency (USEPA) model standards and techniques for
control of radon, as described in USEPA document 402-R-94-009, or any
substantially equivalent techniques approved by the director in writing.

(53)
"Radon test" means the act of examining a building, air, soil, or water for the
presence and concentration of radon, including taking air, soil, or water
samples, or the act of diagnosing the cause of radon contamination in a
building.

(54)
"Radon tester" means any individual who performs a
test to determine the presence and concentration of radon; provides
professional or expert advice on radon testing, radon exposure, or health risks
related to radon exposure; or holds himself or herself out as doing any of the
foregoing.

(55)
"Real-estate testing" means short-term measurements
that may be requested by a party not residing in the dwelling and that are
performed in, or as a result of, or in expectation of, a real-estate
transaction and are time-limited due to this transaction.

(56)
"Reentrainment"
means the unintended reentry into a building of radon that is being exhausted
from the vent of a radon mitigation system.

(57)
"Renewal" means
the reissuance of a license that is expiring.

(58)
"Research"
means scientific investigation by testing or mitigating for radon as limited by
section
3723.04
of the Revised Code.

(59)
"Residential real-estate measurement" means a
measurement of radon in a single-family home, duplex or condominium involved in
a real-estate transaction. Based on the time-sensitive nature of real-estate
transactions, only short-term measurements are appropriate and specific
protocols are required.

(60)
"Sealing and caulking" means to plug and make
air-tight holes, cracks, gaps, etc. to reduce the passage of gas. Sealing and
caulking enhances radon reduction techniques; however, sealing and caulking
alone has not been shown to lower radon levels significantly or consistently
and therefore is not a stand-alone radon mitigation system.

(61)
"Short-term
measurement" means a measurement conducted for at least forty-eight hours and
up to ninety days; closed building conditions are required for measurements
lasting seven days or less and recommended throughout.

(63)
"Soil gas
retarder" means a continuous membrane or other comparable material used to
retard the flow of soil gases into a building.

(64)
"Stack effect"
means the overall upward movement of air inside a building that results from
heated air rising and escaping through openings in the building envelope, thus
causing indoor air pressure in the lower portions of a building to be lower
than the pressure in the soil beneath or surrounding the building
foundation.

(65)
"Submembrane depressurization (SMD)" means a radon
control technique designed to achieve lower air pressure in the space under a
soil gas retarder membrane laid on the crawlspace floor and sealed, relative to
air pressure in the crawlspace, by use of a fan-powered vent drawing air from
beneath the membrane.

(66)
"Subslab depressurization (SSD) (Active)" means a
radon control technique designed to achieve lower subslab pressure relative to
indoor air pressure by use of a fan-powered vent drawing air from beneath the
concrete slab.

(67)
"Subslab depressurization (SSD) (Passive)' means a
radon control technique designed to achieve lower subslab air pressure relative
to indoor air pressure by use of a vent pipe (without a fan) routed through the
conditioned space of a building and connecting the subslab area to the outdoor
air. This system relies primarily on the convective flow of warmed air upward
in the vent to draw air from beneath the concrete slab.

(68)
"Suitable for
occupancy" means a structural area in a home currently lived in or an area not
currently used for occupancy, such as a basement, that an occupant or homeowner
could use for living space without renovations. This includes an unfinished
basement that could be used regularly as, for example, a recreation room,
playroom, exercise room or workshop.

(69)
"Supervision"
means oversight, review, and approval of work at a site prior to, during, and
upon completion of radon mitigation

(70)
"Working level
(WL)" means any combination of short-lived radon progeny in one liter of air
that results in the ultimate emission of one hundred thirty thousand MeV of
alpha-particle energy. The short-lived radon progeny of radon-222 are
polonium-218, lead-214, bismuth-214 and polonium-214.

(71)
"Working level
month (WLM)" means a unit of exposure used to express the accumulated human
exposure to radon decay products. It is calculated by multiplying the average
radon progeny concentration in working levels to which a person has been
exposed by the number of hours exposed and dividing the product by one hundred
seventy hours per month.